/Engine/Source/Runtime/Engine/Public/Materials/MaterialRenderProxy.h
Evaluates uniform expressions and stores them in OutUniformExpressionCache.
void EvaluateUniformExpressions ( [FUniformExpressionCache](API\Runtime\Engine\Materials\FUniformExpressionCache) & OutUniformExpressionCache, const [FMaterialRenderContext](API\Runtime\Engine\FMaterialRenderContext) & Context, FUniformExpressionCacheAsyncUpdater * Updater ) const